| Llantwit Major to Dover (New Jersey) | 3,341.24 mi (5,377.20 km) |
| Llantwit Major to Dover (Ohio) | 3,638.94 mi (5,856.30 km) |
| Llantwit Major to Downers Grove (Illinois) | 3,840.78 mi (6,181.14 km) |
| Llantwit Major to Downey (California) | 5,338.43 mi (8,591.37 km) |
| Llantwit Major to Dranesville (Virginia) | 3,539.05 mi (5,695.56 km) |
| Llantwit Major to Draper (Utah) | 4,769.27 mi (7,675.40 km) |
| Llantwit Major to Drexel Heights (Arizona) | 5,191.94 mi (8,355.61 km) |
| Llantwit Major to Drexel Hill (Pennsylvania) | 3,412.03 mi (5,491.14 km) |
| Llantwit Major to Duarte (California) | 5,319.87 mi (8,561.51 km) |
| Llantwit Major to Dublin (California) | 5,245.57 mi (8,441.92 km) |
| Llantwit Major to Dublin (Georgia) | 4,069.19 mi (6,548.73 km) |
| Llantwit Major to Dublin (Ohio) | 3,724.60 mi (5,994.16 km) |
| Llantwit Major to Dubuque (Iowa) | 3,911.80 mi (6,295.43 km) |
| Llantwit Major to Duluth (Georgia) | 4,049.30 mi (6,516.72 km) |
| Llantwit Major to Duluth (Minnesota) | 3,771.51 mi (6,069.66 km) |
